FORCED VIBRATIONS OF SILOS LEADING TO BUCKLING

✍ Scribed by FERNANDO G. FLORES; LUIS A. GODOY

• Book ID: 102607298
• Publisher: Elsevier Science
• Year: 1999
• Tongue: English
• Weight: 404 KB
• Volume: 224
• Category: Article
• ISSN: 0022-460X
• DOI: 10.1006/jsvi.1999.2188

✦ Synopsis

The large-amplitude force vibrations of steel thin-walled silos when empty are investigated. The basic geometry con"guration modelled is a cylinder clamped at the bottom with a top conical roof. Wind pressure distributions are assumed as non-axisymmetric in the circumferential direction and with a rectangular impulse or step distribution in time. Instability is identi"ed from "nite-element computations of the time response of the shell using a criterion due to Budianski and Roth. Results are computed for silos made with plain as well as with corrugated sheets, and the in#uences of geometric imperfections and the sti!ening due to the roof are included in the analysis. The problems are also modelled with static pressures using both continuation techniques and bifurcation analysis from a linear fundamental path. Additional results have been obtained to estimate the dynamic buckling load for step loading using energy procedures. All results are computed using "nite-element codes developed by the authors.